<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>测试</title>
    <style>
        div {
            /* opacity: 0.5; */
        }
        
        .box1 {
            background: orange;
            height: 50px;
            width: 200px;
            float: left;
            opacity: 0.5;
        }
        
        .box2 {
            background: black;
            height: 50px;
            /* margin: 0 200px; */
            color: red;
        }
        
        .box3 {
            background: orange;
            height: 50px;
            width: 200px;
            float: right;
            opacity: 0.5;
        }
    </style>
</head>

<body>
    <div class="content">

        <div class="box1"></div>
        <div class="box3"> </div>
        <div class="box2">dfkdfaaaaaaaaa aaaaa aaaaaaaadflllll llllllllllll lllllllllllllllll llllllllllllllllllllllllll lllllllll llllllll lllll lllllllllllllfjas;ldfjasl;fffffff fffffffffff ffff fffffffffffffffff ffffffffffffffffffffffff</div>




        dfaskfjl

    </div>


</body>

</html>